著者名,タイトル,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Wedzicha JA,"Analysis of chronic obstructive pulmonary disease exacerbations with the dual bronchodilator QVA149 compared with glycopyrronium and tiotropium (SPARK): a randomised, double‐blind, parallel‐group study",Lancet,,,2014,1,,199,https://cir.nii.ac.jp/crid/1370016862432657536,